package com.qizhan100.qtools.common;

import java.security.MessageDigest;

public class MD5 {
    
    private static final String hexDigits[] = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f" };
    
    public MD5() {
    }
    
    private static String byteArrayToHexString(byte b[]) {
        StringBuffer resultSb = new StringBuffer();
        for (int i = 0; i < b.length; i++)
            resultSb.append(byteToHexString(b[i]));
        
        return resultSb.toString();
    }
    
    private static String byteToHexString(byte b) {
        int n = b;
        if (n < 0)
            n += 256;
        int d1 = n / 16;
        int d2 = n % 16;
        return (new StringBuilder(String.valueOf(hexDigits[d1]))).append(hexDigits[d2]).toString();
    }
    
    public static String Encode(String origin) {
        String resultString = origin;
        try {
            resultString = new String(origin);
            MessageDigest md = MessageDigest.getInstance("MD5");
            resultString = byteArrayToHexString(md.digest(resultString.getBytes("utf-8")));
        } catch (Exception exception) {
        }
        return resultString;
    }
    
    public static String MD5Encode(String key) {
        return Encode(Encode(key));
    }
    
    public static void main(String[] args) {
        System.out.println(MD5Encode("123456"));
    }
    
}
